Sliding ram for tools.



No. 638,704. PatentedDec. l2, I899. m. n. CONVERSE.

SLlDlNG RAM FOR TOOLS.

(Application flied Feb. 10, 1899.)

(No Model.)

2 I Q/A /g/TOR I UNITED STATES PATEN MASOI-IIL D. CONVERSE, OF NEIVYORK, N. Y., ASSIGNOR TO JOHN J. TOIVER, QF SAME PLACE.

SLIDING RAM FOR TOOLS.

SPECIFICATION forming part of Letters Patent No. 638,704, dated December12, 1899.

Application filed February 10, 1899. Serial No. 705,201. (No model.)

To all whom it may concern:

Be it known that I, MAsoHIL D. CONVERSE, a citizen of the United States,and a resident of the city, county, and State of New York, have inventedcertain Improvements in Means for Securing Sliding Rams to the Shanks ofTools, of which the following is a specification.

Implements having sliding rams secured to their shanks for applyingpercussive force have been made. A tool of this character is shown inLetters Patent No. 457,925. In this type the sliding ram is providedwith a socket thelower end of which is contracted to form an annularshoulder, and the upper end of the shank is inserted in this socket andthen upset to produce an annular flange to abut against the shoulder. Ina tool so constructed the annular flange on the end of the shank isliable to become more and more expanded by constant pounding of the ramas the tool is used, and thus by finally engaging the inner walls of thesocket will cause thesame to bind and interfere with free movement ofthe ram, rendering the latter inefficient.

The objects of my present improvements are to obviate such difficulty,to provide simple and inexpensive means of securing the ram ,andincidentally also to reduce the weight of the tool-shank, and Iaccomplish the same by the means or devices hereinafter fully set forthand claimed.

My invention is comprised, essentially, in a web formed by one or moregrooves longitudinally arranged in the tool-shank, the upper end or endsof which are closed or stopped oif, and one or more lugs projectinginwardly in the sliding ram arranged to slidably engage these groovesand opposite sides of the web and to collide with the closed upper endsthereof, and in other particulars, all of which will hereinafter be morefully described in detail.

In the'drawings, Figures 1 and 2 are vertical side elevations, partlysectional, showing one form and means of applying my invention. Fig. 3is a cross-section on line m a: of Fig. at. Fig. 4 is a verticaledgewise eleva tion with a sectional view on line y y of Fig. 1; andFigs. 5 and 6 are further modifications of construction and applicationof my invention. All figures show parts, forms of construction,andoperation hereinafter more particularly referred to.

Like letters indicate corresponding parts in all figures.

A is the shank, of oval cross-section, having two parallel grooves b bon opposite sides thereof extending lengthwise. These grooves at theirupper ends are closed at cc, or, as in Figs. 1 and :2,'n1ay be widenedout laterally and stopped off, forming shoulders, and the end of theshank in such case bifurcated by cutting away the web at h between thesaid grooves.

B is a tubular sliding ram of corresponding oval cross-section providedwith two lugs 61 (1,

directly opposite each other near the entranceto the socket, whichslidably engage the grooves b b and the web between them, said socketbeing terminated by a concave recess 6 at the upper end and providedwith lateral openings near to said terminus, and said openings beingsurrounded exteriorly by bosses j j to conserve the strength of the ramat this point.

The application and operation of my invention are as follows: Thetool-shank A, having been constructed with grooves stopped off or closedat their upper ends, is embedded in a sand core (in the manner commonlypracticed and well known in the molders art) having the required shapeto form the interior tubular portion of the ram B, including the lugs dd, which is then cast around the same, said sand core being afterwardbroken out and removed. The lugs 01 d are in this case integral parts ofthe ram and, slidably engaging the grooves 19 b in the shank, willoppose and collide with the closed ends a c of said grooves and preventthe ram and tool-shank from being separated. The concavity e of theram-socket will also prevent the corners of the end of the shank fromspreading laterally.

In the construction shown by Figs. 1 and 2 the shank, having beenconstructed as therein shown, is inserted in the socket of the ram B,the grooves 12 b striding the lugs cl 01 until in the position shown inFig. 2. Now several blows from the sliding handle or ram B are deliveredupon the end of the grooves at the upper end of the shank, whereupon theconcavity e of the ram-socket, besides preventing the corners of the endof the shank from spreading laterally, will embrace and bend thestopped-oft ends 0 0 toward each other, or, if preferred, two similarpunches or tools f f are inserted through the openings i 'i to contactwith either opposite edge of the shank A, near its upper end, and byexterial pressure in the direction of the arrows, Fig. 2, the shouldersc c of the grooves are forced together by bending of the metal, closingthe upper end of the grooves, as shown, whereby the shank will notreturn entirely past the lugs d cl, preventing its separation from theram.

The further modified construction of my invention shown in Figs. 5 and 6consists of two similar projecting lips c 0, formed by on tting away theweb at h and sloping off the lateral edges of the shank A at its upperend.

The operation of this modification is as follows: The shank A, havingbeen constructed as shown by these two views, Figs. 5 and 6, is insertedin the socket of the ram, as last above described, the lips c 0 comingin contact with the concave sides of the recess 6 at the terminus of thesocket, when by one or more sharp blows from the ram the lips c c arebent inward toward each other into the space 71., closing the upper endof the grooves Z), as shown in Fig. 6, whereby the shank and ram arekept from becoming separated.

By making the recess 6 concave the extreme lateral corners or edges ofthe upper end of the shank are forced inward or compressed slightly onall sides as the toolis used, as before pointed out, so there can be nolateral spreading or upsetting of the top of the shank to bind or causeinterference with free movement of the ram.

By reference to the cross-section Fig. 3, in connection with the otherfigures, it will readily be seen that if butasingle groove 1) and asingle lug d were employed the weight of the shank A would be greatlyincreased. Hence I use two grooves and also flatten the front and rearsides of the shank.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. The improved means of securing sliding.

rams to the shanks of tools, comprising a shank bifurcated at its upperend, having one or more parallel grooves in the sides and lengthwisethereof, widened and stopped 01f at their upper ends on either side ofsaid bifurcation, in combination with one or more lugs near the entrancein the socket of the ram to slidably engage said groove or grooves, anda concave recess at the terminus of said socket, constructed, assembledand to operate substantially as and for the purposes shown anddescribed.

2. The improved means of securing sliding rams to the shanks of tools,comprising a shank bifurcated at its upper end, having one or moreparallel grooves in the sides and lengthwise thereof widened and stopped01f at their upper ends on either side of said bifurcation, incombination with one or more lugs near the entrance in the socket of theram to slidabl y engage said groove or grooves and lateral apertures '5,2', in said ram, constructed, assembled and to operate substantially asand for the purposes shown and described.

3. The combination of a longitudinallygrooved tool-shank bifurcated atits upper end, with a sliding socket-handle having a lug or lugs in theinside to slidably engage the groove or grooves of the shank andconstructed with a concavity e at itsinterior ter minus wherebythebifurcated ends of the groove or grooves are bent toward each other byimpact of the handle and the corners of the end of the shank areprevented from spreading laterally, substantially as shown anddescribed.

MASCHIL D. CONVERSE. lVitnesses:

R. SANGER, HERBERT E. TREADVVELL.

